ErrorCodeDoctor
LG · Refrigerator (Bottom Freezer)

LG Refrigerator (Bottom Freezer) CF error code

Difficulty: Hard · Cost: $100–$250 · Duration: 5m

The CF error means your LG refrigerator has detected a problem with the condenser fan — the fan located at the back bottom of the unit that expels heat collected from the condenser coils. The fan is essential for keeping the compressor cool — without it the refrigerator will overheat and stop cooling. Note that if you turn the power off and back on the error will temporarily disappear but will return again about 3 hours later if the fault is still present. A reset is worth trying first. If the error keeps returning the fan motor will need replacing by a technician.

Common causes

  • Condenser fan motor has malfunctioned or failed
  • Fan blades are obstructed by debris or dust buildup at the back of the unit
  • Wiring to the condenser fan motor is loose or damaged
  • Main control board fault affecting the fan signal

How to fix it

  1. 1

    Unplug the refrigerator from the outlet or trip the circuit breaker and wait 5 minutes

  2. 2

    Plug it back in and check if the CF error has cleared

  3. 3

    Note: if the reset clears the error it will return again about 3 hours later if the underlying fault is still present

  4. 4

    Check the back bottom of the unit for visible debris or dust buildup around the condenser fan and clear it gently while unplugged

  5. 5

    If CF returns after resetting contact a qualified technician to inspect and replace the condenser fan motor

Related LG Refrigerator (Bottom Freezer) error codes

1

OF F

Demo mode is active — all cooling has been disabled

easy
2

FS

The freezer temperature sensor has a short circuit or disconnection

hard
3

rS

The refrigerator temperature sensor has a short circuit or disconnection

hard
4

dS

The defrost sensor has a short circuit or disconnection

hard

CF error — frequently asked questions

What does the CF error mean on a LG refrigerator (bottom freezer)?

The condenser fan at the back of the unit is not running correctly

What causes the CF error?

The CF error is usually caused by: Condenser fan motor has malfunctioned or failed; Fan blades are obstructed by debris or dust buildup at the back of the unit; Wiring to the condenser fan motor is loose or damaged; Main control board fault affecting the fan signal.

Can I fix the CF error myself?

This is rated a hard fix — it often requires tools, parts, or experience, and may be safer left to a professional technician.

How much does it cost to fix the CF error?

Fixing the CF error on a LG refrigerator (bottom freezer) typically costs $100–$250, depending on parts and whether you do it yourself or hire a technician.

Is it safe to keep using my refrigerator (bottom freezer) with the CF error?

We'd recommend addressing the CF error before continuing to use the refrigerator (bottom freezer), since hard-rated issues often involve a real fault rather than a minor glitch.